SCIENTIARUM POLONORUMACTA Silv. Colendar. Rat. Ind. Lignar. 7(4) 2008, 73-77 OCCURRENCE OF PHELLINUS PINI (BROT.) BONDARSTSER ET SINGER IN SELECTED SCOTS PINE STANDS OF NORTHERN POLAND Wojciech Szewczyk Poznań University of Life Sciences Abstract. Phellinus pini is the most frequent cause of the development of red ring rot creating great economic losses in the felling product. Phellinus pini remains a constant threat and it causes significant losses in timber raw material. It affects the functioning of the ecosystem and its stability from the economic point of view. The main purpose of the presented work was to make an inventory of Phellinus pini fruit bodies in stands in the age of over 100 years on the area of division of North Poland. For the estimation of red ring rot fruit bodies, 30 division were selected with pine being the dominating species in the age of 100-170 years. In results of the presented estimations, one can state that only one of the observed stands did not show any red ring rot fruit bodies. Key words: Phellinus pini, red ring rot, Scots pine INTRODUCTION Phellinus pini is the most frequent cause of the development of red ring rot creating great economic losses in the felling product. Mańka [2005] reported that about 8% of the felling product consists of timber infected by red ring rot. In the available publications, there is not enough information referring to the occurrence of red ring rot and the economic losses caused by it. Forest Research Institute publishes information referring to this problem in the prognoses of the occurrence in Poland of important pests and diseases which may be expected in the successive years. However, these data refer only to the general occurrence of long and trunk diseases. In the report for the year 2006, only two Regional Directorate of State Forest reported data referring to the acreage where red ring rot occurred (Regional Directorate Białystok 30 055 ha and Regional Directorate Olsztyn 4825 ha). In the period before the II Word War, red ring rot was recorded in 80% of division causing great economic losses [Filipowski 1937, after Sierota 1998]. Phellinus pini remains a constant threat and it causes signifi- Corresponding author Adres do korespondencji: Dr inŝ. Wojciech Szewczyk, Department of Forest Pathology of Poznań University of Life Sciences, Wojska Polskiego 71 C, 60-625 Poznań, Poland, e-mail: wszew@up.poznan.pl
74 W. Szewczyk cant losses in timber raw material. It affects the functioning of the ecosystem and its stability from the economic point of view [Sierota 1998]. The main purpose of the presented work was to make an inventory of Phellinus pini fruit bodies in stands in the age of over 100 years on the area of division of North Poland. MATERIAL AND METHODS For the estimation of red ring rot fruit bodies, 30 division were selected with pine being the dominating species in the age of 100-170 years, in 21 district. In each compartment, 1-ha plots were selected and each tree was provided with a number and it was macroscopically estimated. RESULTS Results of the performed inventory are presented in Table 1. The smallest number of fruit bodies was found in Directorate Gdańsk (1.5%), then followed Directorate Szczecinek (1.7%), Olsztyn (3.75%), Toruń (5.4%), Piła (6.6%) and Szczecin (7%). Analysis of fruit bodies occurrence in relation to the habitats indicated that pines are most threatened on fresh mixed broadleaved habitats (6.7%). On the remaining habitas, the averaged value of fruit bodies occurrence was the following: fresh 4.1%, fresh mixed 3.5%, boggy mixed brodleaved 0.9%. Table 1. Occurrence of red ring rot fruit bodies in the inspected stands Tabela 1. Występowanie owocników huby sosny w lustrowanych drzewostanach No Lp. District Nadleśnictwo Regional Directorate of State Forest RDLP Compartment Wydzielenie Age Wiek Site type Siedliskowy typ lasu Number of trees with fruit body Liczba drzew z owocnikami Trees with fruit body Drzewa z owocnikami % 1 Kartuzy Gdańsk 44a 104 fresh mixed broadleaved 2 Lipusz Gdańsk 319i 170 fresh mixed broadleaved 3 Lubichowo Gdańsk 148c 138 fresh coniferous 4 Dwukoły Olsztyn 319d 107 fresh mixed 2 1.0 3 2.0 3 1.4 11 5.4
Occurrence of Phellinus pini (Brot.) Bondarstser et Singer... 75 Table 1 cont. Tabela 1 cd. 5 Iława Olsztyn 102d 115 fresh mixed 6 Iława Olsztyn 190l 111 fresh mixed broadleaved 7 Wielbark Olsztyn 326j 113 fresh coniferous 8 Jastrowie Piła 229w 155 fresh mixed 9 Kaczory Piła 180d 115 fresh mixed broadleaved 10 Kaczory Piła 375c 111 fresh coniferous 11 Okonek Piła 149p 112 fresh coniferous 12 Okonek Piła 26a 107 fresh coniferous 13 Tuczno Piła 144i 105 fresh mixed 14 Zdrojowa Góra Piła 254f 110 fresh mixed 15 Kłodawa Szczecin 65j 126 fresh mixed broadleaved 16 Kłodawa Szczecin 81i 132 fresh mixed broadleaved 17 Łobez Szczecin 150g 123 fresh mixed 18 Gościno Szczecinek 229j 115 fresh mixed 19 Gościno Szczecinek 94p 112 fresh mixed broadleaved 20 Manowo Szczecinek 9h 110 fresh mixed 21 Manowo Szczecinek 117j 145 fresh coniferous 3 1.5 15 7.1 3 1.0 20 17.4 17 18.0 5 4 5 4.2 3 0.6 4 0.7 2 1.0 23 12.6 4 2.6 13 5.7 5 2.0 5 3.4 3 1.2 12 3.4 Silvarum Colendarum Ratio et Industria Lignaria 7(4) 2008
76 W. Szewczyk Table 1 cont. Tabela 1 cd. 22 Manowo Szczecinek 15s 135 boggy mixed broadleaved LMb 23 Miastko Szczecinek 143g 105 fresh mixed 24 Niedźwiady Szczecinek 147g 110 fresh mixed 25 Dąbrowa Toruń 50b 100 fresh mixed 26 Gniewkowo Toruń 351b 120 fresh mixed 27 Gniewkowo Toruń 216b 135 fresh coniferous 28 Rytel Toruń 87b 136 fresh mixed 29 Rytel Toruń 56d 130 fresh coniferous 30 Solec Kujawski Toruń 224i 126 fresh coniferous 3 0.9 0 0 3 1.0 5 2.8 11 4.3 22 8.0 3 2.7 14 9.5 21 5.0 DISCUSSION OF RESULTS In the results of the presented estimations, one can state that only one of the observed stands did not show any red ring rot fruit bodies. The greatest number of fruit bodies was found in compartment 65j of Forest District Kłodawa in the stand habitat LMś. According to Mańka and śebrowska [1997], stands growing on better habitats have more developed branches and during pruning, there remain wounds after the removed branches and then, the heartwood is uncov ered on a significant tree surface leaving thereby an open door for the fruit bodies. However, the determination of the real degree of tree infection is very difficult to estimate. Fruit body appears when the rot of the heartwood is very advanced. Sometimes, it may also happen that the fruit body had already fallen off (it usually takes place after 50 years), or it has not yet developed. In the studies carried out by Mańka and Łakomy [1991], in the Experimental Forest District Zielonka, 13% of infected pines in the age of 110 years had shown Ph. pini fruit bodies. In the pine stand in the Wielkopolski National Park, only 17% with red ring rot were found [Mańka and śebrowska 1997]. In compartment 102d of Iława Forest District, after stand removal, it was fond that red ring rot affected 7.7% of trees, fruit bodies occurred on 20% of trees showing red ring rot symptoms. With the increasing tree age,
Occurrence of Phellinus pini (Brot.) Bondarstser et Singer... 77 the threat of red ring rot occurrence increases as well [Bernadzki 2003], and the extent of red ring rot grows as well stands on the area in Northern Poland. However, one must realize that there are also some positive aspects of red ring rot occurrence, because trees with hollows which remain in the stands provide good nesting conditions for birds. REFERENCES Bernadzki E., 2003. Struktura wieku i zagroŝenie zgnilizną starych drzewostanów sosnowych [The age structure and the wood rot of old pine stands]. Sylwan 5, 3-12 [in Polish]. Mańka K., 2005. Fitopatologia leśna [Forest pathology]. PWRiL Warszawa [in Polish]. Mańka M., Łakomy P., 1991. Some new obserwations on red ring rot symptoms caused by Phellinus pini (Thore ex Fr.) Pillat in Scots pine (Pinus sylvestris L.). Phytopath. Pol. 1 (13), 10-13. Mańka M., śebrowska D., 1997. Występowanie huby sosny [Phellinus pini (Thore ex Fr.)] w dwóch ponad 150-letnich drzewostanach Wielkopolskiego Parku Narodowego [Occurrence of red ring rot caused by Phellinus pini (Thore ex Fr.) in two over 150-year-old Scots pine stands of The Wielkopolska National Park]. Morena 5, 33-42 [in Polish]. Sierotra Z., 1998. Choroby infekcyjne ocena występowania i wpływ na gospodarkę leśną [Infection diseases an sssessment of their occurrence and influence on ry]. Sylwan 1 (142), 21-37 [in Polish]. WYSTĘPOWANIE OWOCNIKÓW HUBY SOSNY [PHELLINUS PINI (BROT.) BONDARSTSER ET SINGER] W WYBRANYCH DRZEWOSTANACH SOSNOWYCH PÓŁNOCNEJ POLSKI Streszczenie. Phellinus pini (Brot.) Bondarstser & Singer jest najczęstszą przyczyną powstawania zgnilizny strzały sosny, przyczyniając się do duŝych strat ekonomicznych w uŝytkach rębnych. Grzyb Phellinus pini stanowi stałe zagroŝenie i powoduje straty surowcowe, wpływając na funkcjonowanie ekosystemu leśnego i na jego trwałość z gospodarczego punktu widzenia. Głównym celem pracy było zinwentaryzowanie występowania owocników Phellinus pini, a przez to określenie zagroŝenia drzewostanów sosnowych zgnilizną białą jamkowatą sosny w drzewostanach ponad 100-letnich na terenie nadleśnictw północnej Polski. Do prześledzenia występowania owocników huby sosny wybrano 30 wydzieleń, gdzie gatunkiem panującym była sosna zwyczajna, w 21 nadleśnictwach, w wieku od 100 do 170 lat. W wyniku przeprowadzonych badań moŝna stwierdzić, Ŝe tylko w jednym z obserwowanych drzewostanów nie stwierdzono występowania owocników huby sosny. Słowa kluczowe: Phellinus pini, zgnilizna biała jamkowata sosny, sosna Accepted for print Zaakceptowano do druku: 7.10.2008 For citation Do cytowania: Szewczyk W., 2008. Occurrence of Phellinus pini (Brot.) Bondarstser et Singer in selected Scots pine stands of Northern Poland., Silv. Colendar. Rat. Ind. Lignar. 7(4), 73-77. Silvarum Colendarum Ratio et Industria Lignaria 7(4) 2008